I saw similar driver configuration at salksound.com veracity ht3 or selahaudio.com RC4 without a built in sub loudspeakers, but don't feel confident to attempt building XO myself using 8" for midrange and 10" for bass.

I will be building 3-way speakers soon using expensive drivers from seas excel line like you mentioned but most likely using a kit supplied by designer.

If someone could share xo drawings for speakers above would be a huge help.